Dump-car



A. M. GOW.

DUMP CAR.

APPLICATION FILED SEPI. I2, I9I8. IIENEWED FEB. s, 1920.

Patented Apr. 27, i920.

3 SHEETS-SHEET l.

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Fx. M1 80W.

DUMP CAR. APPLlc/Txoze FILED SEPT. 12, 191s.

HENEWEC FEB. 3, i920.

Patented Apr. 27, 1920.

3 SHEETS-SHEET 2.

- y Jig l@ A. M. SOW.

DUMP CAR.

APFLICMION man SEPT. I2, 91s. RENEWED Fas.3,192o.

3 SHEETS-SHEET 3 1,338,010. atented Apr. 27, 1920,

1,338,010. y Applicationthled September 12, 191,8, Serial No. 253,774. Renewed February 3, 1920. Serial No. 355,957.

UNITED sTATEs PATENT OFFICE.

ALEXANDER, M. Gow, 0EDULUTH ,"1vnNNEsoTA DUMP-cna.

To all whom z't muy concern: i

Be it known thatl I, ALEXANDER M. Gow,

a citizen of the United States, residing vat Duluth, in the'eounty of'St. Louisand State of Minnesota, have y inventedv certain new and useful Improvements in Dump-Cars, of which the following is a specification. This invention relates t0 dump cars. One of the objects of the invention'is to simplify the construction and operation of dump ears, especially that type of ear which is dumped bodily to one side or the'other.

Anotherobject is to reduce vthe numberl of parts to a minimum and' arrange said parts to coperate in a inoreeliicient manner;

Another object 1s t0` provide a dump car .adapted to meet the various requirements for successful commercial operation.

These and other objects are accomplished by the mechanism disclosed by the acconv panying sheets of drawings` in which- Figure 1 is a fragn'ientary cross sectional View of a dump ear embodying my invention, the parts being in their normal `posi` tions;

Fig. 2 is la similar sectional view showing the piston rod moved upwardly. to a, point Where it has unlocked the locking mechanism and passed into engagement with a depending horn member prel'iaratory to dumpin the car to the right;

ig. 3 is asimilar view showing the car body dumped to the right; 4

Fig. 4 is a similar sectional view showing the car body being righted;

Fig. 5 is a fragmentary cross sectional view of the dump car with the piston rod moved into an inoperative position;

Fig. 6 is a fragmentary cross sectional taken in the plane Referring to the figures of the drawings,V

it will be noted that I have shown a car bodyA 10, which is pivotally mounted upon a center 11 foroseillation to either side for dumping purposes, it being understood that the ear/body is supported by a ear frame including center sills 12, which are lmounted upon suitable car trucks. Mounted upon the Specification 0f Letters Patent. I,

tained inthis position as a result of the olf-- set portion 1S, and as a result of the weight of a laterally projecting arm or member 19 `formed integrally` with the piston rod at the upper end of the latter.

rlhe primary function of the member 19 is to move the locking mechanism into a position such that the car body may be dumped to one side or the other, said unlocking action always taking effect before a dumping action is transmitted. The upper and inner extremity of the member 19, as shown in Fig. 1, when the piston is moving upwardly upon a dumping movement7 passes into engagement with the dog 2() secured to the lock releasing shaft 21, to'which secured a weight normally for holding the dog 2() in thi` position shown in Fig. 1,

' and to return said dog to said position when moved therefrom. l As shown in Figs. 1 to 5. inclusive, the car body l0 is provided with do\,\f'nwai'dly extending horn members 221 which lie within the path of movement of the piston rod 17.

lVith the parts in thil position shown in Fig. 1 of the drawings, let it be assumed that air is supplied to the left-hand cylinder 13 through the connection 24. Under such conditimis the piston 14 will rise, the upper and inner pai't of the arm 19 passing into cngageii'icnt with the dog 9,0 ,for rotating the lock releasing shaft 2l, whereby thecar body is Iliade free for a. dumping action to theright-hand side, -it being. Vunderstood that any suitable locking mechanism may he operatively associated with the unlocking shaft 21, such, vfor instance, as the lor-.kingy mechanism shown in mycopeiidiiig application, Serial No. 240,116, filed June '15, 1918,.now Patent `No.

1,290,735, dated January 7, 1919. As soon -26 of the right-hand piston rod 1T as the arm 19 has moved the unlocking shaft into a lock releasing position, as shown in Fig. Q of the drawings, the up'per end of the piston rod 1i' passes into engagement with the lower end of the horn 23. llpon a eontinued upward movement of the left-hand piston rod 1T, the left-hand side ot' the car will be aised to oscillate the car body upon4 its center 11, and the member 1t) will pass out of engagement with the dog 2t), the latter ot' which will be returned to its normal position by the weight 2Q, it beingunderstood that the car body by this time is beyond a position where it lan be locked against dumping movement to the right. By the time that the piston rod 14 has reached the upper end of the cylinder 13, the piston rod will have been raised to such a position wherein the car body will have passed beyond a critical position and will have dumped to the right, due to the weight of the car body and the load therein, as shown in Figf' of the drawings.

lt will be noted by reference to Fig. 3 that the auxiliary projection 25 on the right# hand horn member Q3 has passed into engagement with the outer top cam-portion with the piston in its lowerlnost'position. Due to the auxiliary projection 25 passing into en gagement with the cam portion 2G, the rightliand piston rod has been moved slightly to lthe right, so that the arm 15) on the righthand piston rod, during an upward movement for righting the car body. will not pass `into engagement. with the dog 2Q on the right-hand unlocking shaft 2li there" preventing a dumping action of tlieb` ly tothe lett if fo any reason the body should 'become overbalam'ed in that directi'm.

71th the parts as shown in lig. 3,'and.

assuming that it is desired to right the ear body, air under the left-hand piston is permitted to escape and air is supplied under the right-hand piston tln'ough the pipe 2T. whereupon the righthand piston moves npwardly. causing the car body to swing toward a horizontal position.

liy referring to Fig. -l of the drawings, it will be noted that the lower end of the right-haml horn member 23 passes tln'ough the slot lt' in the right-hand cylindrical piston lnember l5 to malte possible the righting action ot the car body with the horn 23 arranged as shown. When the right-hand piston has reached its upper limit ol movement.. the car body l() will have reached its central position. due partially to its own momentum, lt will be noted that during this upward righting movement of the right-hand piston. the right-hand piston rod is moved ont\v:.rdly farther from its normal position. but also it will be noted that as soon as the right-hand piston moves downwardly'toward its normal position. as shown in Fig. 1, it will slide vover the right-haml dog Ztl and back into a position wherein the tention is called to the fact that the member 41f) includes two spaced side portions, as

shown in Fig. T ot'- the drawings, said spaced portions being connected at the upper inner ends for engagement with the dog 20. By referring to Figs. 3 and l ot' the drawings, it will be noted that the horn member 23 passes downbetween the spaced portions of the member 1t). In view ot' the fact that the member 19 does not pass into engagement with` its corresponding dog 20 during the righting movement. the locking mechanism is maintained in its locking position to prevent a dumping action t'o the other side of the car, thereby avoiding accidents which might result seriously. -lt will be understood that the car may be dumped to the left in a manner similar to the dumpine` action to the right.

n Figs. 1 to 5, inclusive. I have shown the horns QB as rigidly connected to the car body. 11n Fig. l have shown a modifi -a tion in which the.'l1o1ns 3() are not rigidly connected with the car body. but,.`on thc other hand, are formed integrally with each other by connecting arms 31. the central connecting point of which is pivotally connected to the car frame at 3:2. The upper part of the horns are arranged with an enlarged bearing surface 32 foi-engagement with the car body. aud if desired fo' any reason, such. for example. as overcoming -any inaccuracies in mannfacture;sbinls may be interposed between the bearing surface Il!" and the car body to properly center the latter. liy means of this latter arrangement it is possible to erect all of the operating parts on the car fralne and test' .same out prior to the time that the car body is mounted on the frame.

By means of the arrangement which l have shown herein. it is possible to move the piston rods laterally within the piston portions l5 into an linoperative position. in` so fa' as unlocking the car aml dumping the same is concerned, This is accomplished by moving the piston rods laterally to their outermost positions and hooking the same in such positions b v hooks 35. whereup'ni any upward movement of the piston/rods would be inetl'ective so far as unlocking or dumping the car is concerned.

l'ly referring to Fig. .'i. wherein the pistons are locked in such positions. it will be noted that arms 19 will not pass into engagement with the dogs 2t). and that the horns 23. irstead ol beingengaged by the inner ends of the member t9. .will pass down between the spaced portions thereof. 'l`his makes possible the testing of the cylinders without actual operation ol' the car. Tt also makes possible a safeguard against any unlocking and dumping of the car during,

.for oscillation, av member` operatively connectcd to said body, locking mechanism for thc car body, and an oscillating piston rod the upper end of' which isiree for atl'ecting the locking mechanism and vengaging said member to oscillate the car body.

2. In a dump car, a body mounted tor oscillation, a member operatively connected to said body, locking mechanism for saidl car body, and a vertically and transversely movable piston rod the upper end ot' which is free for aifecting the locking mechanism.

and engaging said member to oscillate the car body. i

31 In a dump car, a car body mounted for oscillation, a depending member operatively connected to said body` locking mechanism for the car body, and a fluid-operated oscillating piston rod for actuating the locking mechanism and for engaging said mem- `ber to oscillate the car body, a lateral movement of said piston rod being gravity controlled` Nl. In a dump car, a body mounted 't'or oscillation, locking .mechanism therefor, a

piston, and a piston rod lhaving a transverse movement and also movable in a vertical direction, iaid piston rod having an integral extension for engaging and'operating the locking mechanism.

In a dump car, a car body mounted for oscillation, a member operatively connected thereto, a piston rod actuated ina vertical direction for successively engaging the locking mechanism and for engaging -said member for oscillating the car body,

said piston rod alsd being capable of transverse movement for avoiding an operative action and normally occupying a 'certain predetermined position.

6. In a dump car, a car body mounted for oscillation, a member movable with the car body, and a vertically actuated piston rod capable of lateral movement having its upper end free and movable into engagement with the lower end of said'member to dump the car body.

T. In a dump car, a car. body mounted ior oscillation, locking mechanism on each side oi the car, and a piston rod on each side ot' the car 'l'or dumping and righting the car body, the piston rod on each side of the car being controlled'. to avoid operative engagement with the locking mechanism when righting the car body.

In a dump car, a car body mounted for oscillation, a member operatively connected with said car body and having a plurality oi projections, dumping mechanism for the car body including a piston rod movable vertically and transversely and being arranged to successively engage the locking mechanism ior unlocking the car body and engaging' one ol' the projections of said member for dlunpingthe car body, another projection ot' said member engaging said piston rod when the car body is in a dumped position to throw the piston rod into a position wherein it will avoid operative engagement with the-locking mechanism during a. righting movement ot' the car body.

9. In a dump car, a car body mounted for oscillation, a member operatively connected thereto and having a. plurality of projections, and a piston rod for engaging one of the projections for dumping the car, the other projection engaging the piston rod for throwing the same laterally to avoid an unlocking action oi the car body.

10. In' a dump car, a car body, a depending member operatively connected thereto, a dumping cylinder, a piston mounted therein having a hollow port-ion with a slot therein, an oscillating piston rod for engaging. said depending member for dumping the car,said member passing through the slot in said piston during a righting movement of the car body.

ll. In a dump car, a dumping cylinder, a piston movable therein and having a hollow portion, a piston rod having a lateral movement within said hollow portion, and a horn operatively associated with the car body for moving the piston rod laterally under certain predetermined conditions.

Signed at Duluth,` Minn., this 4th day of September, 1918.

Amcxlmnnn M. now.

,.l-Vitnesses i JonN E. CARLSON, E. H. IVINsLoW. 

